Crosshead



Dec. 23, 1930. J. O. MCARTHUR 1,785,121

CROSSHEAD Original Filed Feb. 9, 1927 2 Sheets-Sheet 1 gwuewto'a J. O. MCARTHUR CROSSHEAD Dec. '23, -1 930.

2 Sheets-Sheet 2 Original Filed Feb. 9. 1927 Patented Dec. 23, 1930 ar-. M errnra. essna WYOMING,

GR O SSH'EAD Application filed February v9,. 1927, Serial 1Y0. 16%885; RenewedMay 13, 1930,

The invention relates to crossheads, and has for its object to provide device of this character wherein removable liners are used between the crosshead shoe sections, which liners are angularly shaped in vertical transverse cross section and may be easily and quickly removed from between the sections and placed in the angular channels in the outer sides of the crosshead shoe sections in- 1e side of the side plates of the crosshead whereby said shoe sections may be moved inwardly towards each other and upwardly for taking up the wear on the shoes incident to the reciprocation of the crosshead in the crosshead 154 guides.

A further object is to provide angularly shaped liners between the shoe sections having one of their flanges horizontally disposed and extending into registering channels in 2:) the inner faces of the shoe sections andto' provide means whereby said angularly shaped liners may be removed from their positions between the sections and interposed between the crosshead plates and the outer sides of the shoe sections without disassembling the crosshead.

A further object is to provide a crosshead mounted in crosshead guides and having shoes formed from sections, angularly shaped e0 liners interposed between the sections, which liners may be removed and interposed between the crosshead plates and the sections without modifying their angular. shape.

lVith the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawing described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the in vention.

In the drawings:

Figure 1 is a view in elevation of the crosshead.

Figure 2 is a top plan view of the crosshead.

Figure 3 is a vertical transverse sectional View through the crosshead.

Figured isa-vertical longitudinal sectional view rthroughhthe crosshead.

5"isaTvertical transverse sectional view through the crosshead taken on line. 5-5 of u Ei llr n rs- Beferring to the drawing the numeral 1 designates spaced crosshead guides in parallel relation, ioig instance the giiides of almomotive. Slidablyinounted on the guides 1 is a crossh ead '2, which crossheadicon prises. a member 3 having v formed 5 therewith sidev plates 4:; in parallel relation. The device. hereinafter set forth is an imp rovement. on y- R 19 Paten s Pa ticu ar y a P t nt issued tome Februaryfi, l92%,'l lo;.,1,4e82,938.' Plates 1 connected together by aw'rist pin 5 on which a: connecting rod 6 is p iyotally mountd, Jlwanes t d m he. membe ym ln ota keyf'l'iis a; rod; 8,, all of which opret in j s-asualm pe V Securedtqtheupper and lower sides of the, side plates 2. by means. ofqtransversely disposed bolts 9 and 101 are crosshead shoe secia 1 .threrel i' hich th bo s 9 and 01 tend, m an; the bolts 9 and 10 eat-end through-v callyelongated apertures 12 in e-Plat s.2zw ersby 1111? e an pul i of; theliners'hereinafter set forth, said shoese c tions. 11 zmay be. moved upwardly. and downwardly for li st na he am o taking p, the vertical movement.incident to the wear on the inner sides 13 of the crosshead guides 1. D sp sed etw en. e c s h ad. S1166 e 8 onsl la llea ar y h red line s Whih liners have. one of their fiang 'es provided with anaperture. 15 forthe reception of the bolts 9 Q felongated slots 16 eXtending; entirely tothe endfoigthe flange and through which o ethebo alfl ext nd n by m v ea .1 I 6 is a perspect veview, of cne of the h 'tstlaedls e tud ally em th ine a, t 'sbbis hat ai Ha al-s imy e emo ed om 1 betw en. he sh esect ns for aking up the lateral Wea -1 1 ,the' e es 9 ofj theflangeslf ofthei shoe sections and for y Wear hichs riay, ak pl ce n th =9? pesi e s de olfflie gii fes' It w e not-ed hat wh n a ner t s, m vali etween the; shoe sectionsu, the shoe sections may 10D move inwardly towards each other and then the liner is placed on the outer sides of the sections 11 as shown in Figures 3 and 5, and after which the bolts 9 and 10 are replaced and tightened, and the lateral wear is consequently taken up, as well as the vertical wear, and at the same time the side plates of the crosshead, which are at a fixed distance from each other, remain at said fixed distance. It will be noted that the liners are angularly shaped in cross section and when between the shoe sections 11, one of their flanges is re ceived in the registering channels 18 in the inner faces of the shoe sections, consequently their angular shape is maintained and the liners are shaped whereby when removed from between the sections 11, their form will not have to be modified before placing them between the plates l and the outer sides of the shoe sections 11 in the channels 19, consequently longitudinal bending of the liners to angular shape as set forth in the above mentioned patent or use of a differently shaped liner is obviated.

From the above it will be seen that angularly shaped crosshead liners are provided between the shoe sections and which liners may be easily and quickly removed and placed in position on the outer sides of the sections for taking up vertical and lateral wear.

The invention having been set forth what is claimed as new and useful is- 1. A crosshead comprising spaced crosshead plates, spaced crosshead shoes carried by said plates and having crosshead guide channels, said crosshead shoes having portions disposed between the crosshead plates and portions overlying the edges of the crosshead plates, bolts extending through the crosshead shoes and the crosshead plates, removable liners angular in vertical transverse cross section disposed between the shoes and the plates and having portions overlying the ends of the plates, said shoes being formed from sections, said shoe sections having registering channels, said channels forming means whereby the liners may be disposed between the shoe sections and held firmly in said shoe sections.

2. The combination with a crosshead having shoes slidably mounted on crosshead guides, said shoes being formed in sections, crosshead plates connected to the outersides of said shoe sections, of removable liners between the shoe sections, one of the flanges of said liners angular in vertical transverse cross section being disposed in channels in the shoe sections and means whereby the liners between the shoe sections may be received and held between the crosshead plates and the outer sides of the shoe sections and held firmly in said shoe sections.

3. The combination with an adjustable crosshead having shoes formed from sections slidably mounted on crosshead guides,

signature.

JOHN O. hie-ARTHUR 

